Systematics of alpha-radioactivity in the rare earth region

Toth, K.S.; Rasmussen, J. O.

doi:10.1016/s0029-5582(60)81008-5

Cited by 35 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[57]: r 0 = R c = 1.315 fm, a = 0.65 fm. The strength of the WS potential has been adjusted to reproduce the measured Q α value corrected by the electron screening term [6,13,[58][59][60]:…”

Section: E Penetration Factormentioning

confidence: 99%

αdecay in the complex-energy shell model

Betán

Nazarewicz

2012

Phys. Rev. C

View full text Add to dashboard Cite

Background: Alpha emission from a nucleus is a fundamental decay process in which the alpha particle formed inside the nucleus tunnels out through the potential barrier. Purpose: We describe alpha decay of 212 Po and 104 Te by means of the configuration interaction approach. Method: To compute the preformation factor and penetrability, we use the complex-energy shell model with a separable T = 1 interaction. The single-particle space is expanded in a Woods-Saxon basis that consists of bound and unbound resonant states. Special attention is paid to the treatment of the norm kernel appearing in the definition of the formation amplitude that guarantees the normalization of the channel function. Results: Without explicitly considering the alpha-cluster component in the wave function of the parent nucleus, we reproduce the experimental alpha-decay width of 212 Po and predict an upper limit of T 1/2 = 5.5 × 10 −7 sec for the half-life of 104 Te. Conclusions:The complex-energy shell model in a large valence configuration space is capable of providing a microscopic description of the alpha decay of heavy nuclei having two valence protons and two valence neutrons outside the doubly magic core. The inclusion of proton-neutron interaction between the valence nucleons is likely to shorten the predicted half-live of 104 Te.

show abstract

Section: E Penetration Factormentioning

confidence: 99%

αdecay in the complex-energy shell model

Betán

Nazarewicz

2012

Phys. Rev. C

View full text Add to dashboard Cite

show abstract

“…He points out that fluctuations related to the existence of subshells are reduced when pairing correlations are included in the shell-model calculation. MacFarlane et al discuss the decays of rare earth a emitters which have neutron number N = 84 (46,47,48). They are able to explain the variation of the reduced width with proton number Z, but only if they choose the proper single-particle energies for the proton states and a suitable strength of the pairing interaction.…”

Section: The Bcs Methods and Alpha Decay Ratesmentioning

confidence: 99%

Untitled

1964

Annu. Rev. Nucl. Sci.

View full text Add to dashboard Cite

Section: E Penetration Factormentioning

confidence: 99%

Alpha Decay in the Complex Energy Shell Model

Betan,

Nazarewicz

2012

Preprint

View full text Add to dashboard Cite

Background: Alpha emission from a nucleus is a fundamental decay process in which the alpha particle formed inside the nucleus tunnels out through the potential barrier.Purpose: We describe alpha decay of 212 Po and 104 Te by means of the configuration interaction approach.Method: To compute the preformation factor and penetrability, we use the complex-energy shell model with a separable T =1 interaction. The single-particle space is expanded in a Woods-Saxon basis that consists of bound and unbound resonant states. Special attention is paid to the treatment of the norm kernel appearing in the definition of the formation amplitude that guarantees the normalization of the channel function.Results: Without explicitly considering the alpha-cluster component in the wave function of the parent nucleus, we reproduce the experimental alpha-decay width of 212 Po and predict an upper limit of T 1/2 = 5.5 × 10 −7 sec for the half-life of 104 Te. Conclusions:The complex-energy shell model in a large valence configuration space is capable of providing a microscopic description of the alpha decay of heavy nuclei having two valence protons and two valence neutrons outside the doubly magic core. The inclusion of proton-neutron interaction between the valence nucleons is likely to shorten the predicted half-live of 104 Te.

show abstract

Systematics of alpha-radioactivity in the rare earth region

Cited by 35 publications

References 34 publications

αdecay in the complex-energy shell model

αdecay in the complex-energy shell model

Untitled

Alpha Decay in the Complex Energy Shell Model

Contact Info

Product

Resources

About